// The MIT License (MIT)

// Copyright (c) 2017-2020 Uber Technologies Inc.

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

package lookup

import (
	"errors"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"go.uber.org/mock/gomock"

	"github.com/uber/cadence/common/membership"
	"github.com/uber/cadence/common/service"
)

func TestHistoryServerByShardID_Succeeds(t *testing.T) {
	ctrl := gomock.NewController(t)
	mockResolver := membership.NewMockResolver(ctrl)

	mockResolver.EXPECT().Lookup(service.History, string(rune(65))).
		Return(membership.NewHostInfo("127.0.0.1:1234"), nil)

	host, err := HistoryServerByShardID(mockResolver, 65)
	require.NoError(t, err)
	assert.Equal(t, "127.0.0.1:1234", host.GetAddress())
}

func TestHistoryServerByShardID_PreservesError(t *testing.T) {
	lookupError := errors.New("lookup failed")
	ctrl := gomock.NewController(t)
	mockResolver := membership.NewMockResolver(ctrl)

	mockResolver.EXPECT().Lookup(service.History, gomock.Any()).
		Return(membership.HostInfo{}, lookupError)

	host, err := HistoryServerByShardID(mockResolver, 65)
	assert.Equal(t, lookupError, err, "error should not be modified")
	assert.Empty(t, host)
}
